import turtle
t=turtle
t.color ('black','black')
t.forward (50)
t.right (90)
t.forward (50)
t.left (90)
t.forward (50)
t.right (90)
t.forward (100)
t.right (90)
t.forward (50)
t.right (90)
t.forward (50)
t.left (90)
t.forward (50)
t.right (90)
t.forward (100)
